1 files changed, 11 insertions, 2 deletions
diff --git a/math.c b/math.c
index d98467ca0a..7edde60270 100644
--- a/math.c
+++ b/math.c
@@ -9,13 +9,22 @@
 
 **********************************************************************/
 
+#include "ruby/config.h"
+
 #ifdef _MSC_VER
 # define _USE_MATH_DEFINES 1
 #endif
-#include "internal.h"
+
+#include <errno.h>
 #include <float.h>
 #include <math.h>
-#include <errno.h>
+
+#include "internal.h"
+#include "internal/bignum.h"
+#include "internal/complex.h"
+#include "internal/math.h"
+#include "internal/object.h"
+#include "internal/vm.h"
 
 #if defined(HAVE_SIGNBIT) && defined(__GNUC__) && defined(__sun) && \
     !defined(signbit)